diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2019-01-29 15:19:23 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-13 14:02:34 -0700 |
| commit | 423869f8871dee4028b67fa30f660ab43d14cfb2 (patch) | |
| tree | 12ea47cf829a38edd725c5c6855fc6af9dc67bc6 /drivers/irqchip | |
| parent | dc81cfafb4b96d83c740387ef880e720214c92ab (diff) | |
irqchip/gic-v3-its: Gracefully fail on LPI exhaustion
[ Upstream commit 45725e0fc3e7fe52fedb94f59806ec50e9618682 ]
In the unlikely event that we cannot find any available LPI in the
system, we should gracefully return an error instead of carrying
on with no LPI allocated at all.
Fixes: 38dd7c494cf6 ("irqchip/gic-v3-its: Drop chunk allocation compatibility")
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-gic-v3-its.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index d9a880108315..15579cba1a88 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -1581,6 +1581,9 @@ static unsigned long *its_lpi_alloc(int nr_irqs, u32 *base, int *nr_ids) nr_irqs /= 2; } while (nr_irqs > 0); + if (!nr_irqs) + err = -ENOSPC; + if (err) goto out; |